THE DEPTH AND MARINE DEPOSITS OF THE PACIFIC OCEAN. 117 



Foraminifera ; mineral particles (probably about GO per cent), mean diame- 

 ter 0.3 mm., angular and rounded, augite, magnetite, olivine, dark green 

 chloritic mineral, labradorite, palagonite, and rock fragments. 



Station 73, 5th October, 1899. 

 Lat. 17° 27' S. ; long. 149° 32' W.; depth, 807 fathoms. 



VOLCANIC MUD or SAND: gray, fine-grained, quite incoherent; appears 

 to have been washed ; contains pelagic and bottom-living Foraminifera, Pter- 

 opods, Echinoid spines, Gasteropods [Plcttrotoma), Ostracodes, Polyzoa, oto- 

 liths, Alcyonarian spicules, Tunicate spicules, coccoliths, rhabdoliths ; angular 

 mineral particles, 0.15 mm. mean diameter obsidian, felspar, augite, mag- 

 netite ; one or two coprolites observed. 



Station 76, 6th October, 1899. 

 Lat. 15° 56.2' S. ; long. 147° 40' W. ; depth, 2269 fathoms. 

 GLOBIGERINA OOZE : light brown, coherent ; very little material, con- 

 taining about 50 per cent calcium carbonate, which consists of pelagic and 

 bottom-living Foraminifera, mostly fragmentary, small Fish teeth, cocco- 

 liths and rhabdoliths ; small mineral particles including obsidian and felspar. 



Station 77, 7th October, 1899. 

 Lat. 16° 3'S. ; long. 147° 11' W. ; depth, 1322 fathoms. 



GLOBIGERINA OOZE: cream colored, granular, slightly coherent; con- 

 taining no amorphous clayey matter, but large numbers of small pelagic 

 Foraminifera, bottom-living Foraminifera, Echinoid spines, Coral fragments, 

 otoliths, Ostracodes, fragment of Dentalium, Fish teeth, coccoliths, rhabdo- 

 liths, one or two Pteropod fragments. Tunicate spicules, and small calca- 

 reous bodies (horseshoe shaped); Radiolaria, Sponge spicules, Diatoms; a 

 very few small mineral particles, including augite and olivine. 



Station 78, 7th October, 1899. 

 Lat. 16° 8' S. ; long. 146° 42' W. ; depth, 609 fathoms. 



PTEROPOD OOZE: cream colored, granular, slightly coherent ; very little 

 fine material ; seems to have been washed ; contains pelagic and bottom-living 

 Foraminifera, Pteropods, Heteropods, Echinoid spines, small Lamellibranchs 

 and Gasteropods (small Pleurotoma), otoliths, Ostracodes, Fish teeth, cocco- 

 liths, rhabdoliths, and Tunicate spicules ; Sponge spicules, Radiolaria, Dia- 

 toms; obsidian, felspar, and magnetite. 



